Fusion Welding of Age-Hardenable Superalloys

Hoppin, G. S.; Yount, R.E.

doi:10.4271/690102

Cited by 4 publications

(4 citation statements)

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“…Specimens tested by DLEPR were firstly welded, as indicated by Hoppin and Yount [29], by RSW in the solution treated condition (solution treatment was carried out at 927°C for 0.25 h and followed by water quenching), and then subjected to different precipitation hardening treatments (see Table 2). According to Table 2, there were seven different specimens.…”

Section: Methodsmentioning

confidence: 99%

“…In addition to this, the possibility of using stainless steels in structural automotive was studied by a next generation vehicle programme [28]. Although the general practice in welding superalloys is to employ a weaker, more ductile austenitic filler metal than the base metal to minimise weld cracking, when the maximum joint strength is required, filler metal of base metal composition is used [29]. Thus, RSW, which is an autogenous welding process (i.e.…”

Section: Introductionmentioning

confidence: 99%

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Effect of metallurgical evolution during post-weld aging treatment on localised corrosion of resistance spot welding joints of A286 superalloy

Tiedra

Martín

Blanco

2018

Corrosion Engineering, Science and Technology

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The combined effect of resistance spot welding and precipitation hardening on the localised corrosion of A286 superalloy is studied. The specimens tested by double loop electrochemical potentiokinetic reactivation were welded in the solution treated condition, and then subjected to different precipitation hardening treatments. For both base metal and weld nugget, the maximum localised corrosion is reached when η phase is clearly observable. The fact that the localised corrosion resistance of weld nugget is different from that shown by base metal may be explained by the segregation of Ni and Ti towards the interdendritic region of weld nugget (studied by using scanning electron microscope/energy dispersive X-ray analysis).

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of metallurgical evolution during post-weld aging treatment on localised corrosion of resistance spot welding joints of A286 superalloy

Tiedra

Martín

Blanco

2018

Corrosion Engineering, Science and Technology

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“…The tensile shear test specimens were welded in the solution treated condition [22], and then subjected to six different post-weld aging treatments (see Tab. 2).…”

Section: Experimental Procedures 21 Materialsmentioning

confidence: 99%

“…The general practice in welding superalloys is to employ a weaker, more ductile austenitic filler metal than the base metal to minimize weld cracking but, when the maximum joint strength is required, filler metal of base metal composition is recommended [22]. Thus, resistance spot welding (RSW), which is an autogenous welding process and is widely used for joining sheet steel in the automotive industry [23], can be an interesting method for welding A286 superalloy sheets [24].…”

Section: Introductionmentioning

confidence: 99%

Effect of Widmanstätten η phase on tensile shear strength of resistance spot welding joints of A286 superalloy

Martín

Tiedra

Blanco

2019

Metall. Res. Technol.

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This work aims to study the effect of Widmanstätten h phase on tensile shear strength (TSS) of resistance spot welding joints (RSW) of A286 superalloy subjected to post-weld high temperature aging treatment. The tensile shear test specimens were welded in the solution treated condition, and then subjected to six different post-weld aging treatments (at an aging temperature of 840°C for six different aging times). The ascast dendritic microstructure of the weld nugget and the austenite equiaxed-grain microstructure of the base metal have a different response to the post-weld high temperature aging treatment. Growth of Widmanstätten h phase in the weld nugget is faster than in the base metal. While in the base metal the Widmanstätten h phase precipitates into the grain, in the weld nugget precipitates at the interdendritic region because of the segregation of Ti towards the last-to-solidify interdendritic regions (studied by performing SEM/EDX analysis). Although the hardness increases with the presence of Widmanstätten h phase, the increase in hardness does not necessarily imply an increase in the experimental TSS.

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Spark Plasma Sintering of Nickel-Based Superalloys: A New Route to Produce Dual-Alloy Turbine Disks

Saly,

Villechaise,

Mellier

et al. 2024

The Minerals, Metals &Amp; Materials Series

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Fusion Welding of Age-Hardenable Superalloys

Cited by 4 publications

References 0 publications

Effect of metallurgical evolution during post-weld aging treatment on localised corrosion of resistance spot welding joints of A286 superalloy

Effect of metallurgical evolution during post-weld aging treatment on localised corrosion of resistance spot welding joints of A286 superalloy

Effect of Widmanstätten η phase on tensile shear strength of resistance spot welding joints of A286 superalloy

Spark Plasma Sintering of Nickel-Based Superalloys: A New Route to Produce Dual-Alloy Turbine Disks

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